I'd like a campaign along the lines of DoW1's Dark Crusade or Soulstorm campaigns, where you pick a faction and duke it out over territories. I'd like that before any faction specific campaign, because it has a lot more replay value to the PvE player.

Strongly agreed. A short 1-chapter campaign for every race would be nice.

Or, even nicer, a Dark Crusade / Retribution type campaign where the same levels can be reused for all faction campaigns (just with different voiceovers) would be good too.I would lean more toward Dark Crusade style, with a meta starmap to conquer (and defend), one system at a time.